公开(公告)号：US20240006687A1

公开(公告)日：2024-01-04

申请号：US18470442

申请日：2023-09-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinxiang Chen ,  Denghua Lin ,  Yulian Zheng ,  Peng Wang ,  Haizu Jin

IPC: H01M50/103 ,  H01M50/507 ,  H01M50/503 ,  H01M50/516

CPC classification number: H01M50/103 ,  H01M50/507 ,  H01M50/503 ,  H01M50/516 ,  H01M2220/20

Abstract: Embodiments provide a battery, an electric device, and a method and a device for preparing battery cell, featuring a higher space utilization. The battery includes: a plurality of battery cells, where the plurality of battery cells are arranged in a first direction, a first region on an edge of a first surface of each of the plurality of battery cells is recessed to form a first recess, a first electrode terminal of each of the battery cells is protrusively provided on a second surface of the battery cell, the first surface and the second surface are perpendicular to the first direction, and the plurality of battery cells include a first battery cell and a second battery cell that are adjacent; and a first busbar configured to connect first electrode terminals of the adjacent first battery cell and second battery cell.

公开(公告)号：US11843119B2

公开(公告)日：2023-12-12

申请号：US18055623

申请日：2022-11-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Honggang Yu ,  Songjun Shi ,  Haizu Jin ,  Shutao Song ,  Bing Chen ,  Xinxin Du

IPC: H01M4/62 ,  H01M10/0587 ,  H01M4/02

CPC classification number: H01M4/628 ,  H01M10/0587 ,  H01M2004/021

Abstract: An electrode assembly includes a positive electrode plate and a negative electrode plate wound or stacked to form a bend region, and a barrier layer provided at the bend region. At least part of the barrier layer is located between the positive electrode plate and the negative electrode plate that are adjacent to each other, and is configured to prevent at least part of ions deintercalated from the positive electrode plate from being intercalated into the negative electrode plate in the bend region.

公开(公告)号：US11799136B2

公开(公告)日：2023-10-24

申请号：US18327674

申请日：2023-06-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qian Liu ,  Quanguo Li ,  Yonghuang Ye ,  Haizu Jin

IPC: H01M50/267 ,  H01M4/02 ,  H01M10/42 ,  H01M10/0585 ,  H01M4/80 ,  H01M50/471

CPC classification number: H01M10/4207 ,  H01M4/80 ,  H01M10/0585 ,  H01M50/267 ,  H01M50/471 ,  H01M2004/021 ,  H01M2004/027

Abstract: A hybrid series battery module includes a first-type battery cell including a first negative electrode plate and a second-type battery cell including a second negative electrode plate. Energy density of the first-type battery cell is less than energy density of the second-type battery cell. A first interlayer spacing of a negative electrode active material of the first negative electrode plate is greater than a second interlayer spacing of a negative electrode active material of the second negative electrode plate. In a state of charge of 0%, a ratio of the first interlayer spacing to the second interlayer spacing falls within a range of greater than or equal to 1.005 and less than or equal to 1.600.

公开(公告)号：US20230307790A1

公开(公告)日：2023-09-28

申请号：US18318744

申请日：2023-05-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi Hong ,  Jianrui Yang ,  Yuanyuan Lan ,  Cong Cheng ,  Na Liu ,  Haizu Jin

IPC: H01M50/446 ,  H01M50/494 ,  H01M50/403 ,  H01M50/426

CPC classification number: H01M50/446 ,  H01M50/494 ,  H01M50/403 ,  H01M50/426 ,  H01M2220/20

Abstract: A separator, comprising a substrate and a coating provided on at least one surface of the substrate are provided. In some embodiments, the coating comprises inorganic particles and organic particles, the organic particles comprise first organic particles and second organic particles both embedded in the inorganic particles and forming protrusions on the surface of the coating; the first organic particles are secondary particles, and the number of the first organic particles in the coating is denoted as A; the second organic particles are primary particles and the number of the second organic particles in the coating is denoted as B; with the separator satisfying: 0.05≤A/B

公开(公告)号：US11764436B2

公开(公告)日：2023-09-19

申请号：US17889422

申请日：2022-08-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian Liu ,  Chengdu Liang ,  Xiaofu Xu ,  Quanguo Li ,  Yonghuang Ye ,  Haizu Jin

IPC: H01M50/267 ,  H01M50/51 ,  H01M50/204 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

CPC classification number: H01M50/267 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M50/204 ,  H01M50/51 ,  H01M2004/028

Abstract: The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first and second type of battery cells are battery cells of different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, and N and M are positive integers; a positive electrode plate of the second battery cell contains two or more positive electrode active materials, and when a dynamic SOC of the second battery cell is in a range from 90% to 98%, a change rate ΔOCV/ΔSOC in an OCV relative to the SOC of the second battery cell satisfies 3≤ΔOCV/ΔSOC≤9, in mV/% SOC, where SOC represents a charge state and OCV represents an open circuit voltage.

公开(公告)号：US11658330B2

公开(公告)日：2023-05-23

申请号：US17732571

申请日：2022-04-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Xiaowen Zhang ,  Zhenhua Li

IPC: H01M10/04 ,  H01M4/525 ,  H01M10/0565

CPC classification number: H01M10/0459 ,  H01M4/525 ,  H01M10/045 ,  H01M10/0565

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.

公开(公告)号：US20230055271A1

公开(公告)日：2023-02-23

申请号：US17715076

申请日：2022-04-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Kun Fang ,  Zhijun Guo ,  Haizu Jin

IPC: H01M50/179 ,  H01M50/588 ,  H01M50/591 ,  H01M50/119

Abstract: The embodiments of the present application provide a battery cell, a method and system for manufacturing a battery cell, a battery and an electrical device. The battery cell includes: an electrode assembly, including a first tab and a second tab with opposite polarities; a casing for accommodating the electrode assembly, wherein the casing includes a cylinder body and a cover body connected to the cylinder body, the cylinder body is disposed around an outer periphery of the electrode assembly, the cover body is provided with an electrode lead-out hole, and at least part of the cover body is used for electrically connecting a first connecting member of the battery and the first tab; and an electrode terminal for electrically connecting a second connecting member of the battery and the second tab.

公开(公告)号：US20220393311A1

公开(公告)日：2022-12-08

申请号：US17890302

申请日：2022-08-18

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LIU ,  Yonghuang Ye ,  Chengdu Liang ,  Haizu Jin

IPC: H01M50/51 ,  H01M50/446 ,  H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  H01M50/491 ,  H01M10/0585 ,  H01M10/0525

Abstract: The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first type of battery cells and the second type of battery cells are battery cells with different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, N and M are positive integers, the first battery cell comprises a first separator and a first electrolyte, the second battery cell comprises a second separator and a second electrolyte, a kinetic characteristic factor x1 of the first battery cell is: x1=1000×(ε1×r1)/(τ1×t1×θ1), a kinetic characteristic factor x2 of the second battery cell is: x2=1000×(ε2×r2)/(τ2×t2×θ2), and x1 and x2 satisfy: 0.01≤x1/x2≤160.

公开(公告)号：US11289748B2

公开(公告)日：2022-03-29

申请号：US16138451

申请日：2018-09-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhenhua Li ,  Haizu Jin ,  Xing Li

IPC: H01M10/637 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01G11/28 ,  H01G11/32 ,  H01G11/46 ,  H01G11/48 ,  H01M10/42 ,  H01C7/02 ,  H01G11/06 ,  H01M4/13 ,  H01G11/18 ,  H01G11/36 ,  H01M4/02 ,  H01G11/40 ,  H01M4/04

Abstract: This application relates to an electrode plate, an electrochemical device and a safety coating. The electrode plate comprises a current collector, an electrode active material layer and a safety coating disposed between the current collector and the electrode active material layer. The safety coating layer comprises fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The electrode plate can quickly cut off the circuit when the electrochemical device (for example, a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, and thus it may improve the high temperature safety performance of the electrochemical device.

公开(公告)号：US11189821B2

公开(公告)日：2021-11-30

申请号：US16971118

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaowen Zhang ,  Zhenhua Li ,  Haizu Jin

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/137 ,  H01M4/36 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/02

Abstract: This application relates to an electrochemical device. The electrochemical device comprises a positive electrode plate, a negative electrode plate and an electrolyte, wherein the positive electrode plate comprises a current collector, a positive electrode active material layer and a safety coating disposed between the current collector and the positive electrode active material layer; the safety coating comprises a polymer matrix, a conductive material and an inorganic filler; wherein based on the total weight of the polymer matrix, the conductive material and the inorganic filler, the polymer matrix is present in a content of from 35 wt % to 75 wt %, the conductive material is present in a content of from 5 wt % to 25 wt %, and the inorganic filler is present in a content of from 10 wt % to 60 wt %; and the electrolyte has a viscosity at normal temperature of ≤4 cp.